[ARM] MXC: add cpu_is_ macros

We had hardcoded cpu_is_ macros for mxc architectures till now. As we
want to run the same kernel on i.MX31 and i.MX35 this patch adds cpu_is_
macros which expand to 0 or 1 if only one architecture is compiled in and
only check for the cpu type if more than one architecture is compiled
in.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 65 insertions, 9 deletions

diff --git a/arch/arm/plat-mxc/include/mach/mxc.h b/arch/arm/plat-mxc/include/mach/mxc.h
index d6b0c472cd97..5fa2a07f4eaf 100644
--- a/arch/arm/plat-mxc/include/mach/mxc.h
+++ b/arch/arm/plat-mxc/include/mach/mxc.h
@@ -24,21 +24,74 @@
 #error "Do not include directly."
 #endif
 
-/* clean up all things that are not used */
-#ifndef CONFIG_ARCH_MX3
-# define cpu_is_mx31() (0)
+#define MXC_CPU_MX1             1
+#define MXC_CPU_MX21            21
+#define MXC_CPU_MX27            27
+#define MXC_CPU_MX31            31
+#define MXC_CPU_MX35            35
+
+#ifndef __ASSEMBLY__
+extern unsigned int __mxc_cpu_type;
+#endif
+
+#ifdef CONFIG_ARCH_MX1
+# ifdef mxc_cpu_type
+#  undef mxc_cpu_type
+#  define mxc_cpu_type __mxc_cpu_type
+# else
+#  define mxc_cpu_type MXC_CPU_MX1
+# endif
+# define cpu_is_mx1()           (mxc_cpu_type == MXC_CPU_MX1)
+#else
+# define cpu_is_mx1()           (0)
 #endif
 
-#ifndef CONFIG_MACH_MX21
-# define cpu_is_mx21() (0)
+#ifdef CONFIG_MACH_MX21
+# ifdef mxc_cpu_type
+#  undef mxc_cpu_type
+#  define mxc_cpu_type __mxc_cpu_type
+# else
+#  define mxc_cpu_type MXC_CPU_MX21
+# endif
+# define cpu_is_mx21()          (mxc_cpu_type == MXC_CPU_MX21)
+#else
+# define cpu_is_mx21()          (0)
 #endif
 
-#ifndef CONFIG_MACH_MX27
-# define cpu_is_mx27() (0)
+#ifdef CONFIG_MACH_MX27
+# ifdef mxc_cpu_type
+#  undef mxc_cpu_type
+#  define mxc_cpu_type __mxc_cpu_type
+# else
+#  define mxc_cpu_type MXC_CPU_MX27
+# endif
+# define cpu_is_mx27()          (mxc_cpu_type == MXC_CPU_MX27)
+#else
+# define cpu_is_mx27()          (0)
 #endif
 
-#ifndef CONFIG_MACH_MX21
-# define cpu_is_mx21() (0)
+#ifdef CONFIG_ARCH_MX31
+# ifdef mxc_cpu_type
+#  undef mxc_cpu_type
+#  define mxc_cpu_type __mxc_cpu_type
+# else
+#  define mxc_cpu_type MXC_CPU_MX31
+# endif
+# define cpu_is_mx31()          (mxc_cpu_type == MXC_CPU_MX31)
+#else
+# define cpu_is_mx31()          (0)
+#endif
+
+#ifdef CONFIG_ARCH_MX35
+# ifdef mxc_cpu_type
+#  undef mxc_cpu_type
+#  define mxc_cpu_type __mxc_cpu_type
+# else
+#  define mxc_cpu_type MXC_CPU_MX35
+# endif
+# define cpu_is_mx35()          (mxc_cpu_type == MXC_CPU_MX35)
+#else
+# define cpu_is_mx35()          (0)
 #endif
 
 #if defined(CONFIG_ARCH_MX3) || defined(CONFIG_ARCH_MX2)
@@ -47,4 +100,7 @@
 #define CSCR_A(n) (IO_ADDRESS(WEIM_BASE_ADDR) + n * 0x10 + 0x8)
 #endif
 
+#define cpu_is_mx3()    (cpu_is_mx31() || cpu_is_mx35())
+#define cpu_is_mx2()    (cpu_is_mx21() || cpu_is_mx27())
+
 #endif /*  __ASM_ARCH_MXC_H__ */